基于模糊切换增益调节的汽车稳定性滑模控制

摘要

针对汽车稳定性控制系统，根据滑模控制原理并利用模糊系统的逼近能力，提出一种自适应模糊滑模控制方案。设计基于模糊逻辑的模糊控制器，通过隶属函数将滑模面切换函数模糊化，根据滑模到达条件对切换增益进行有效的估计和调整，再采用积分法求解模糊控制器的输出。仿真结果表明，模糊滑模变结构控制方法既能缩短响应时间，也能抑制系统颤振。%For vehicle stability control system,based on the principle of sliding mode control and the use of the approximation capability of fuzzy systems, an adaptive fuzzy sliding mode control scheme is provided. Fuzzy controller is designed based on fuzzy logic, to make the switch function of synovial surface into fuzziness through membership function. And according to the the synovium reaching condition, the switching gain is effectively estimated and adiusted, resulting in the out put hy integral method. The simu- lation results show that the the fuzzy synovial variable structure control method can not only shorten the response time but control the flutter of vehicle system.